westaway



(No Model.) 3 Sheets-Sh-eet 1.

W. 0.,WESTAWAY.

GRINDING MILL.

No. 309,326. Patented Dec. 16, 1884.

7755585": vzfnfor:

- I E 9L I @W y z ii if (No Model.) 3 SheetsSh'eet 2.

W. C. WESTAWAY.

GRINDING MILL. N0. 309, 326.

Patented Dec. 1 6, 1884.

W??? asses N. PETERS, Phamumo n hur, washm mn, v.0.

(No Model.) 3 Sheets-Sheet 3.

W. G. WESTAWAY.

GRINDING MILL.

Patented Dec. 16, 1884.

fnven/or:

Wihesses:

a'rnsir tribe,

'XVALTER O. VVESTAIVAY, OF DELAVAN, \VISOONSIN.

GRlNDiNG-MILL.

SPECIFICATION forming part of Letters Patent No. 309,326, dated December16, 1884:.

Application filed July 1, 1884.

(No model.)

To all whom, it may concern.-

Be it known that I, WALTER G. Wnsrawav, of Delavan, in the county ofWalworth, and in the State of Wisconsin, have invented certain new anduseful Improvements in Grinding- Mills; and I do hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention relates to mills especially adapted for grinding feed, andwill be fully described hereinafter and claimed.

In the drawings, Figure'l is a side elevation of a grinding-millembodying my invention, with a portion of the hopper broken away. Fig. 2is avertical section on line a: w of Fig. 4. Fig. 3 is a frontelevation. Fig. 4 is a plan View, and Fig. 5 a detached elevation of thegrinding plate or knife.

A is a stand or table, upon which the grind ing portion of my devicerests.

B is the driving-shaft, which carries the driving-pulley B, and haskeyed to it a disk, B and to the face of this disk is secured agrinding-disk, O, by screw-bolts C and nut 0 This disk B and plate 0project through an opening in the table or frame, and are revolved bythe shaft 13, the two being partially iuclosed by a hood, 0.

D is a slide that travels in ways d, that are fixed to the table, andthis slide carries the grinding-plate E on the lower edge of its innerface, and also carries the shaft F, 011 which a roller, F, is keyed, aswell as a friction bevelwheel, G. The roller F is inclosed on threesides by a housing, G, and a superimposed hopper, G", from which hopperthe grain or other stuff to be ground is guided onto the roller F. Theupper edge of the plate E has resting upon it or formed with it a knife,H, which acts as a scraper to free the roller of the grain and guide itbetween the grinding-sun faces. -While the face of the knife adjacent tothe disk 0 is perfectly smooth and vertical, the grinding-plate properis provided with fileteeth or ridges that are inclined from a verticalline, and these are crossed by vertical or oppositely-inclined groovese, which are much deeper than the grooves that form the fileedges,andserve both to admit the grain to the grinding-plate in position to beacted upon by the grinding-disk and to discharge the meal and preventchoking. The slide D is held up in position to carry the roller andgrindingplate into close proximity to the grinding-disk by a lever, I,that is pivoted to the table by a rivet, I, and has a lug, 2', on itsface, that bears against a corresponding lug on the slide or face ofhopper G; but the nearness of the grinding-plate to the disk 0 isregulated by a set-bolt, K, that projects through a bracketarm, K, ofthe housing and impinges against the edge of the table, as shown in Fig.2. The pivot I of the lever I is preferably made only strong enough toresist the pressure caused by the wedging of the grain between theroller and grinding-disk, but should be weak enough to break if a nailor any other hard foreign substance that would tend to injure the grinding-faces be carried between them; or the lever itself might be made togive and permit such substance to pass through without inj ury to thegrinding-faces. The lever I has a horizontal opening through the endopposite the pivot, and a bolt, is, that is pivoted to a lug, It, on thetable, passes through this opening, and is screw-threaded to receive aset-nut, 71+, by screwing in which the lever I is clamped against theslide and is forced toward the grind ingdisk as far as set-bolt K willpermit it to go. The friction-wheel G has a slight longitudinal play onits shaft F, and is held out against a cone-wheel, G, bya spring, g,that acts between its hub and a pin, in shaft F, and the tension of thespring should be so regulated that it will only exert a sufficientpressure upon the cone G to take enough power to revolve the roller Fwhen only enough grain is being fed to enable the grinding parts to dotheir work without choking. Therefore, when the machine is clogged, thefrictiongearing will slip and the feed-roll F will stop carrying grainto the disk until the machine has re lieved itself. The shaft Bfurnishes the power through a belt, L, and a pulley, L, to turn theshaft of an eccentric, L", which shaft works in a bracket, L that issecured to the rear of the hopper M. A bolt, m, is pivoted to thelowerend of one arm of bracket L and depends therefrom in position to passthrough a bushing, a, in the rear part of an apron, N. The

bushing n is made L-shaped in longitudinal section, and has twoextensions, a a, that straddle the eccentric L from below, and the apronis held upon the bolt on by a suitable pin or key, as shown in Fig. 1.The proper inclination is given to the apron N by shortening orlengthening a front suspending-cord,

P. (hen the parts are all properly adjusted, 5 the arms 12 n will liesnugly against the eccentric, the slot formed by them conforming to thecurve of the eccentric, and therefore as the eccentric turns it willalternately depress the rear end of apron N and flirt it horizontally,thus giving it a motion peculiarly adapted for distributing the materialnicely from the hopper to the feed-roller.

Having thus described my invention, what I claim as new, and desire tosecure by Letters 15 Patent, is

' 1. The combination, with a horizontal arbor and a grinding-diskmounted thereon, of an opposing feed-roller, a stationary grindingplate,and a clearing-knife, as set forth.

2. The combination, with a horizontal arbor and a grinding-disk mountedthereon, and the driving mechanism pror ided with friction gear-wheel Gof the roller F and its shaft, and a friction-wheel adapted to yield inthe direction of the length of the shaft, substan- 2 tially as and forthe purpose set forth.

3. The combination of lever I and its connections with thesupporting-frame, slide D, grinding-plate, the feed-roller, theslide-bracket, arm K, and bolt 70, substantially .as set 0 forth.

4. The combination, with the supportingframe andhopper M, having bracketL, a shaft journaled in said bracket, and an eccentric, L", carriedthereby, of the apron N, having bush- 3 5 ing n, provided withextensions a n, and the adjustable suspending device 1?, substantiallyas shown and described, and for the purpose set forth.

In testimony that I claim the foregoing I 0 have hereunto set my hand,at Milwaukee, in the county of Milwaukee and State of \Visconsin, in thepresence of two witnesses.

XVAL'IER O. VESTAWAY.

Witnesses:

STANLEY S. STOUT, H. G. UNDERWOOD.

